Fuel-supply apparatus for internal-combustion engines.



F. WEINBERG.

FUEL SUPPLY APPARATUS FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILEDMAR. 26. 1915.

1,1 53 afi6a Patented Sept. 14, .1915.

. 2 SHEETS-SHEET 1. F; T 1 k i i2 f w E 2 n J 3 I 7): J t h 1 Q ATTORNEYF. WEINBERG.

FUEL SUPPLY APPARATUS FOR INTERNAL COMBUSTION E NGINES. APPLICATIONFILED MAR.26. 1915.

1,1 fi fimfl Patented Sept. 14, 1915.

2 SHEETSSHEET 2.

WITHESSES mvEnTor? ATTOR'N EY FREDERICK WEINBERG, OF DETROIT, MICHIGAN.

IF'U'lilL-SIII'PILY APPARATUS FOR INTERNAL-COMBUSTION ENGINES.

maaeeo.

Application filed March 26, 1915.

To all whom it may concern:

Be it known that I, FREDERICK WEINBERG, a citizen of the United States,residing at Detroit, county of WVayne,-State of Michigan, have inventeda certain new and useful Improvement in Fuel-Supply Apparatus forInternal-Combustion Engines, and declare the following to be a full,clear, and exact description of the same, such as will enable othersskilled in the art to which it pertains to make and use the same,reference being hadto the accompanying drawings, which bodying myinvention. Fig. 2, is a sectional detail view. Figs. 3, 4, 5, 6, 7 and 8show modified forms of a portion of said apparatus. Figs. 9 and 10 areelevations showing the apparatus which is the subject of thisapplication in place upon an automobile, the automobile being shown indifferent positions in said two figures to illustrate the operation ofsaid improved apparatus. Fig. 11 is a detail view showing the ejectornozzle in the intake pipe.

12, Figs. 9 and-10,,is a carbureter, and 11 is the intake manifold of aninternal combustion engine.

a is an inclosed tank located at a higher position than the carbureter12 and connected with said carbureter by a pipe 9 so that the liquidwill flow by gravity from the tank a to said carbureter aided by thepressure of evaporation of the fuel. 6 (Fig. 1) is an inclosedcompartment within the tank a.

0 is a float adapted to reciprocate verti cally in the compartment 1)when actuated by the liquid in said compartment.

6 is a stem coaxial with the float c and extending vertically upwardtherefrom.

f is a sliding piece passed over a guide 3 so as to make a sliding fit(Fig. 2). g is a valve upon the piece f. I

m is a leaf spring corrugated as shown an supported at its ends atpoints somewhat closer together than the normal length of the unfiexedspring. One end of the spring is pivoted to a stationary support at z.y, is an Specification of Letters Patent.

Serial No. 17,141.

adjustable screw threaded plug, the other end of the spring w is pivotedto the outer Patented Sept. 1%, 1915.

end of the plug 3 said plug may be screwed out or in the screw threadedcavity in which it engages to adjust the distance between the endsupports of the spring w.

m is a passage slanting as shown.

4, is a second passage slanting for apart of its length in the samedirection and extending parallel and adjacent to the passage m.

g is a valve seat at the inner end of the passage m.

i is a valve seat at the upper end of th passage 4. j

i is a ball valve adapted to engage-automatically upon the seat '5 Itmay be fastened to the stem h. The valve seat 6 is vertically over thevalve seat 9 n is a passage forming a continuation of the passage 4 andacting in connection therewith to put the air space 0 of the tank a intoconnection with the air space d of the compartment 6 within said tankwhen the ball valve 2' is displaced from its seat, as shown in Fig. 1.

h is a push rod extending from the sliding piece f up into the passage 4and acting when said piece is at the upper end of its travel to displacethe ball valve 11 from its seat, as shown in Fig. 1 of the drawings. Atthis position of the sliding piece f the valve 9 engages upon the valveseat 9 and closes the passage m.

j, is a pipe opening into the air space at of the compartment 6 andleading from a supply reservoir 10.

70 is a pipe communicating with the passage m and at its other endopening to the intake manifold of the engine (Figs. 1 and 10).

p, is an opening joining the compartment 7) with the interior of thetank a outside of said compartment beneath the level of liquid in saidtank and compartment.

(7, is an outwardly opening non-return valve controlling the opening 19.

1' is a pipe extending through the cover of the tank a and extendingdownwardly toward a point 8 where it opens to the interior of the tanka, beneath the level of liquid in said tank. The position of the lowerend of the pipe 1- determines the head acting to discharge the liquidfrom the tank 6 and the liquid seals the end of the pipe at 2, is ascrew-threaded plug which is ad justed above the pipe 1' in ascrew-threaded cavity forming an extension of said pipe.

25 is a passage extending to the lower end of the plug 2 andcommunicating with the pipe 9". r

u is a passage opening to the outer air from the plug 2.

o is a valve seat around the inner end of the passage to and w is a ballvalve adapted to engage on said valve seat to close the passsage u, thevalve w opens toward the interior of the tank a. Instead of the ballvalve w a spring or gravity controlled leaf valve w (Fig. 5) may be usedengaging upon a valve seat a or a spring actuated conical valve w mayengage upon the valve seat r (Fig. 6) or a piston valve 10'', springactuated, may be used to put the passages into connection with thepassage t (Fig. 7). The valve 1.0 may engage upon the valve seat a whenrequired. Or a modified screwthreaded plug 2, with an ordinary conicalspring controlled puppet valve 10 engaging upon a valve seat '1) may beemployed (Fig.8).

A utility of the non-return valve w and its modifications is illustratedin Figs. 9 and 10. If the automobile is ascending a steep hill, as shownin Fig. 9, there would be a tendency for the gasolene to descend towardand into the reservoir 10 through the pipe j. This tendency will becounteracted by the fact that the pipe j enters the top of the tank aata considerable distance above the liquid level, in which tank a partialvacuum will be drawn. When the automobile is descending a grade, asshown in Fig. 10, the tendency will be for the liquid hydrocarbon to rundown into the tank a and this will be counteracted by the valve w whichwill prevent the escape of air and therefore hold the excess of liquidback from entering the tank (1. Figs. 3 and 4 show this valve as it maybe adjusted to devices hitherto used. In Fig. 3 is shown the mechanismof a device in which two compartments are joined by a passage controlledby a float actuating valve 5. The passage uniting these two compartmentsbeing in such device open to the outer air. If the plug 2 is adjusted,as shown in Fig. 3, to close the opening between said passage and theouterair, then such apparatus will embody my invention and secure theobjects thereof to an extent. Fig. 4 shows a similar adjustment wherethe valve 5 is not used but instead thereof a very small permanentopening which has heretofore been connected directly with the outer airis employed. Ihe adjustment is the same as that just described in Fig. 3and theobject of my'invention is thereby secured.

As shown in Fig. 11 the ejector nozzle for producing a vacuum whichnozzle extends in the direction of the flow of the gas mixture in theintake pipe is hollowed in the direction of the fiow of the gasolenemixture and is conical-toward the flow of air in the pipe 70. Thisnozzle is suction producing and the suction increases with the speed ofthe gas mixture flowing toward the engine cylinders. The suction uponsaid nozzle is due to the inertia of the passing air as distinguishedfrom the change of static pressure due to the adjusting of the throttlevalve. The valves 2' and g are obviously opened and closed successivelyand not simultaneously.

WVhat I claim is:

1. In an apparatus of the kind described, an inclosed chamber, a secondinclosed chamber, a passage leading from the lower portion of said firstinclosed chamber to said second inclosed chamber, a nonreturn valve insa1d passage opening toward sa1d second inclosed chamber, a vacuumproducing passage communicating with said first inclosed chamber,apparatus in said first inclosed chamber actuated by the liquid thereinadapted to close said vacuum passage and open communication between theair spaces of said chambers or to close said communication and open saidsuction passage, a passage from said second inclosed chamber to theouter air, an inwardly opening nonreturn valve in said passage, and asupply pipe for gasolene opening into the first named chamber for thepurpose described.

2. In an apparatus of the kind described, an inclosed chamber, a secondinclosed chamber, a communication between said chambers, a vacuumproducing passage opening into said first named chamber, a valve seat insaid passage, a valve seat in the communication between said chambers,said valve seats being located one above the other, a single integralpiece adapted to actuate both of said valves, and means forreciprocating said piece.

3. In an apparatus of the kind described, a valve actuating piece, anapproximately straight spring having its ends secured at vacuumproducing passage communicating with said firstchamber, a passageextending between the air spaces of said chambers, means for closingsa1d suction passage and opening said communicating passage or closmgsa1d communicating passage and openmg sa1d suction passage, and a plpeextendchamber and extending below the level of of the securing points,said valve actuating the liquid in said chamber.

5. In an apparatus of the kind described, an inclosed chamber, a secondinclosed chamber, a communicating passage adapted to convey liquid fromthe first'named chamber to the second chamber, a supply pipecommunicating with said first chamber, a vacuum producing passagecommunicating with said first chamber, a passage extending between theair spaces of said chambers,-

means for closing said suction passage and opening said communicatingpassage or closing said communicating passage and opening said suctionpassage, a pipe extending through the upper part of said second chamberand extending below the level of the liquid in said chamber, a passageadapted to put the upper. end of said pipe into communication with theouter air, and an inwardly opening nonreturn valve in said passage.

6. In an' apparatus of the kind described, a slanting passage m, asecond slanting passage 4 approximately parallel to the passage m, avalve seat at the lower end of the passage m, a valve seat at the upperend of the passage 4, a valve adapted to engage upon each of said seats,a reciprocating piece, said reciprocating piece connecting with thevalve adapted to close the passage m'and extending to the valve at theupper end of the passage 4, said valves being located approximately, inline with each other and in 'line with the reciprocation of said piece.

7 In a vacuum feed system, the combination of an inclosed auxiliaryliquid supply chamber, a supplytank located horizontally at a distancefrom said chamber and connected therewith by a liquid supply conduit,

means for producing a vacuum in said chamber, a passage passing throughthe wall of said chamber and adaptedto permit air to enter the same, andan automatic inwardly opening nonreturn air valve in said passage.

. 8. In an apparatus of the kind described, a valve actuating piece, anapproximately straight spring having its ends secured at points at adistance apart less than the length of said spring so that said springshall be bowed between its ends, and an adjustable piece "to which oneof said ends is secured adapted to adjust the distance apart pieceengaging said spring intermediate its ends.

9. In combination with an explosion en-y gine and a carburetor throughwhich the'] same is supplied with liquid fuel, a main supply tanklocated below the plane of theengine intake but liable to be raised inand tending, for containing liquid, normally above the level of suchtank but liable to be in positions below the level of such tank, aliquid conduit connecting the tank and said receptacle, a suctionconduit communicating at one end with the upper part of the receptacle,a nozzle communicating with said suction conduit and with the engineintake at a point intermediate the choke of the carbureter and theintake valve of said engine, a liquid feed connection from receptacle tocarbureter, an automatic means for varying the vacuum in saidreceptacle, said nozzle being so located in said intake that a vacuumshall be created therein by the inertia of the passing gases.

10. The combination with a main liquid supply tank, of a liquid fuelreceptacle located in a plane above said tank but liable to be loweredinto the plane of said tank or below the same, a conduit leading fromsaid tank to said receptacle, an auxiliary receptacle,-a conduit leadingfrom said fuel receptacle for discharge therefrom into said auxiliaryreceptacle, exhaust means for reducingthe pressure in said first fuelreceptacle below that of the atmosphere, a valve controlling thecommunication between said first fuel receptacle and said exhaust means,a valve controlling the communication between said first fuel receptacleand said auxiliary receptacle, and means for automatically unseatingsaid first valve and 'the inertia of the current of gases passing theopen end of said passage in said intake pipe to produce a vacuum in saidchamber.

12-. In a vacuum feed system, a vacuum chamber, an intake pipe for aninternal combustion engine, a passage connecting said chamber and saidintake pipe, said passage terminating in an ejector nozzle extendinginto said intake-pipe and adapted to co-act with the passing current ofgas to produce a vacuum in said chamber, said ejector nozzle having anenlarged end made conical in the direction in which the gases come tosaid nozzle.

13. In a vacuum feed system, a vacuum chamber, an intake pipe for aninternal combustion engine, a passage connecting said chamber and saidintake pipe, said passage terminating in an ejector nozzle extendinginto said intake-pipe and adapted-to co-act with the passing current ofgas to produce a vacuum in said chamber, said ejector nozzle having anenlarged end made conical in the direction in which the gases come tosaid nozzle, and hollowed out upon the side toward the flow of gaseousmixture.

14. In a vacuum feed system, a vacuum chamber, an intake pipe for aninternal com- .bustion engine, a passage connecting said.

chamber and said intake pipe, said passage terminating in an ejectornozzle extending into said intake-pipe and adapted to co-act with thecurrent of gas passing the open end I meaeeo of said nozzle to produce avacuum in said chamber, the delivery end of said nozzle 15 beingenlarged.

15. In a vacuum feed system, an inclosed chamber adapted to supplyliquid fuel by gravity, a pipe communicating with the outer airextending through the upper endgo cation.

FREDERICK WEINBERG.

